Astronomers find evidence of a possible ninth planet beyond Neptune, reigniting the debate about the formation of the Solar ...

Researchers say they found a curious dot on infrared images taken 23 years apart that seems to be moving in a manner consistent with a large, distant planet.

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the ...

A team of researchers from NASA recently uncovered strong evidence for a rare and complex system of three icy space rocks orbiting one another in the Kuiper Belt. This remote region lies beyond ...

A small team led by Sihao Cheng, Martin A. and Helen Chooljian Member in the Institute for Advanced Study's School of Natural ...

This, together with the star's relatively young age of 18.5 million years, makes the disk a young Kuiper belt analog and therefore an excellent place to search for water ice.

A new dwarf planet, discovered beyond Neptune and described as Pluto's 'cousin,' could void the hypothesis of a Planet X in ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a ...

Its enormous size, comparable to dwarf planets, and highly elongated orbit provide valuable insights into the Kuiper Belt's formation and the dynamics of the outer solar system. This discovery ...

Project Kuiper launched two prototype satellites in October 2023 and, within 30 days of launch, reportedly achieved a 100% success rate. The satellites were later intentionally removed from orbit in ...